# Lief App — The wearable for stress relief

> Discreet smart patch for HRV tracking and drug-free stress management biofeedback. (iPhone/iPad app by BrainBot, Inc..)

- Source: https://appshunter.io/ios/app/lief-app/id1289075477 (this page in markdown: same URL + `.md`)
- Developer: [BrainBot, Inc.](https://appshunter.io/developer/558159738)
- Category: Health & Fitness
- Price: Free
- Age rating: 4+
- Requires: iOS 13.0 · 80 MB
- Languages: American English
- Released: 2017-09-28
- Data updated: 2026-08-25
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/lief-app/id1289075477/reviews.md

## What is Lief App?

Lief is a discreet, clinically-accurate smart-patch that measures your heart rate and heart rate variability. It trains you to control your body’s natural stress response through guided, gentle, and safe biofeedback exercises. Lief’s on-demand stress relief intervention is a 100% drug-free solution to improve your health and to remain mindful and in control throughout your day.

## Key features

- HRV tracking
- Heart rate monitoring
- Biofeedback exercises
- Stress response training
- On-demand stress relief
- Drug-free solution

## Recent user reviews (10 of 47)

All indexed reviews: https://appshunter.io/ios/app/lief-app/id1289075477/reviews.md

### 1/5 — Unable to download the latest update on iOS 15 Pro

*2025-08-25*

Unable to download the latest update of the App. Tried deleting the app, restarted the phone multiple times and different networks with no success.

### 1/5 — Update broke the app on Day 2

*2025-08-24, version 8.1*

I only got to use Lief for 1 day before version 8.1 bricked it. Now it’s stuck on the pulsing screen and won’t connect on either iPhone or Mac. Please fix ASAP — I’ll update this review once it works again.

### 3/5 — Difficult to Connect

*2025-05-20*

I like the Lief device when it is working. However, most of the time there is connectivity problem. A friend also has the same problem with Lief. Customer support is not much help.

### 3/5 — Not reliable for the $$

*2025-03-02*

When you pay over $230 for something you expect no problems. The self pacing doesn’t work 1/2 the time (the buzzing). The HR/HRV meter seems to work fine.

### 5/5 — Awesome HRV-B device

*2025-02-27*

This is the only wearable that’s taught me what to do to raise my HRV. The Downtime breathing has really helped me learn to regulate my nervous system and learn what my stressors are and how to work through them.

**Developer response:** Hi Nicole, Thank you for sharing your feedback on our program, your experience with us is giving us more reason to keep helping more people. We hope to help more individuals like you in the future!

### 1/5 — Annoying check in feature

*2024-12-24*

Of utmost importance with an app like this is convenience and usability. Every time you open the app it asks you to “check-in”.  The AI help and regular support failed to help me turn off this feature. Really annoying.

### 2/5 — Buggy app

*2024-09-29*

The device itself is great but the app is incredibly buggy and currently I am unable to open it at all. Defeats the purpose of spending all this money on the device

### 1/5 — They have deactivated the cancel subscription button

*2024-06-06*

No way to cancel your subscription. The button doesn’t work. The only button in the entire app that doesn’t do anything when clicked. I’ve emailed support 3 times and just got charged $99 again. Criminal.

### 5/5 — Stress managed, thanks to Lief!!

*2023-04-27*

Lief is a great app that has helped me manage my stress levels. The app is easy to use and has a plenty of great features that’ve helped me track my stress levels, learning how to manage them. The interface is very intuitive and the app is very beginner-friendly. I love how the app provides personalized recommendations based on my stress levels and helps me find ways to relax and de-stress. I would definitely recommend Lief to anyone looking for a great stress management app.

**Developer response:** Hi there, thank you for your great review of the Lief app! We're glad it has helped you manage stress and provided personalized recommendations for relaxation.

Your recommendation means a lot to us, and we truly appreciate your support. If you have any further feedback or suggestions, please don't hesitate to reach out. We're here to support you on your stress management journey :)

Thank you again for your positive review of Lief. Wishing you continued success and well-being :)

### 5/5 — First ever review for a app ever

*2022-09-09*

After a month of use this magical device. I have seen a huge increase in my daily battle with anxiety. One of the best decision I have ever made. Thank lief for making this life changing/saving device

**Developer response:** Hello, thank you for sharing your experience with our program! We're glad to hear that we helped you with your anxiety. We do work incredibly hard and spend a lot of hours improving our program which we think will be of value to our community. Sharing yours keeps us going!

## Frequently asked questions about Lief App

### What does the Lief App do?

The Lief App utilizes a discreet smart patch to measure your heart rate and heart rate variability. It then guides you through biofeedback exercises designed to help you train your body's natural stress response, promoting mindfulness and control throughout your day.

### What are the key features of Lief App?

Key features include clinically-accurate heart rate and HRV tracking via a smart patch, guided biofeedback exercises for stress response training, and on-demand stress relief interventions. It offers a drug-free approach to improving health and maintaining mindfulness.

### How much does Lief App cost?

Based on the provided information, the app itself does not have in-app purchases or ads, suggesting a one-time purchase model for the associated hardware and software. Specific pricing details would typically be found on the app's store page or the developer's website.

### Who is the Lief App for?

This app is designed for individuals seeking a non-pharmacological method to understand and manage their stress. It is suitable for those interested in biofeedback, heart rate variability tracking, and improving their overall mental and physical well-being through mindful self-regulation.

## Version history (last 5 releases)

### 14.4 — 2026-08-03

Bug fixes and design improvement

### 14.3 — 2026-07-14

Onboarding flow improvement

### 14.2 — 2026-07-05

Feature implementation and Bug fixes

### 14.1 — 2026-06-08

AI Voice improvement

### 13.1 — 2026-05-02

improvement

## Apps similar to Lief App

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Body Insights for Apple Watch](https://appshunter.io/ios/app/body-insights-for-apple-watch/id6467108273) | 4.4 (48) | Free | Health & Fitness |
| [Optimal HRV](https://appshunter.io/ios/app/optimal-hrv/id1501292206) | 3.0 (24) | Free | Health & Fitness |
| [Oxa Life](https://appshunter.io/ios/app/oxa-life/id1643501265) | 4.8 (4) | Free | Health & Fitness |
| [Yudemon HRV](https://appshunter.io/ios/app/yudemon-hrv/id1629852639) | 4.8 (10) | Free | Health & Fitness |
| [StressEraser Pro](https://appshunter.io/ios/app/stresseraser-pro/id1170487348) | 5.0 (1) | Free | Health & Fitness |
| [Somnee](https://appshunter.io/ios/app/somnee/id6445828473) | 3.7 (71) | Free | Health & Fitness |

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*